Scaffold support



Sept. 30,A 1952 L. M. PoLAK, JR

SCAFFOLD SUPPORT Filed Oct. 4, 1946 (l 4 5T "IAH/ FIG. 3. 1L

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f s. Y R ma u m9 VK!4 H mu. A O, D. M. n.WY w8 f n w CH/ w Abf/ C"UNITED 4STAT Patented Sept. 30,: 1952 l fi" provision of a scaffoldsupport'structure for use ain the building' and repairing of houseswhich is vertically adjustable to any height and al structure Whichmaybe quickly and easily applied t Land removed from the building.

' Another object of this invention is to lprovide a safe and durablesupport of the character described which is of simple and inexpensivedesign and which may bev easily disassembled in parts easilytransportable.

Still further objects and advantages of this in vention will readilyappear to those skilled yin the art upon examination of the followingdescription in the light of the accompanying drawings in which:

Fig. 1 is a side elevation o! the structure.

Fig. 2 is a front elevation of the structure.

Fig. 3 is a iront elevation of the step.

Fig. 4 is a side elevation of the step.

Fig. 5 is a top plan view,

Fig. 6 is a top plan view of the step the upl right `shown in horizontalsection.

Fig. '1 is a perspective view of the fastening plate.

Referring now to the drawings in which like numerals indicate similarparts throughout the drawings A designates a vertical upright or postwhich is maintained in an upright `position at a. spaced distance fromthe building wall by a horizontal member I which is secured to the topof the upright andwhich carries at its extremity a circular plate 2whichfis adapted to be nailed or screwed to the building.

The endsiof the scaffold walking boards 3 are secured by clamps 4 to thehorizontal leg 5 of a triangular bracket B which comprises a second leg6 perpendicular to leg 5 and an angular brace 1 interconnecting theextremities of legs 5 and 6.

Secured horizontally to the leg 5 of the bracket is a hook member 8terminating in a U shaped hook 9 adapted .to clamp the upper end of thebracket B to the upright A.

Rigidly supported between the leg 6 and the brace 1 is toothed ratchettrack C which engages a pawl I0 aillxed to an upstanding lever I I whichhas the lower end pivotally connected to the vertical leg 6 of thebracket B for movement about 'a horizontal axis or pin I2 carried by ano iset portion of a metal plate I3 as shown in dotted lines in Figure 2,the other portion of the plate bearing against one side ofthe upright orpost A near the base of the vertical leg and in projecting manner so asto prevent the movement of the bracket transverse of the upright.

135.. PATENT OFFI(1151 v-v y y2,612,413.1` jj 'scAFFoLD SUPPORT Y tenisM. Polak, .ragsetmehemfra Application ownerY 4, 1946,'serie1 No. 701.139Y,

z claims. (o1. 304-41) k Secured tothe'l'et'fer II intermediate itslength is a ilexible elementor chain-'I4 which circles behind theupright from the side opposite plate 'I3 and the'end of which issecuredto-plate 'I3 as 'at I5, this chain acting'with the pawl lever andratchet track tor hold the lower end of the legi against the face of theupright under pressure.l Y The face -ofithe uprightladjacent the bracketis provided with vertically spaced openings D which are engaged by ahand operable detent I6 carried by the lower end of leg 6 for thevertical support of said bracket on the-upright.

For mounting the upright to the scaffold vertically adjustable steps 20are provided which comprise a U-shaped brace 2| which partiallyencircles the upright and a pin 22 which interconnects the legs of thisbrace and completes a loose encirclement of A. Inwardly disposed teeth23 are carried by the brace 2| on one side thereof and a horizontal footreceiving member 24, so constructed that the teeth 23 butt into theupright and support and maintain the step when f downward pressure isexerted on the upper side of the foot member 24.

It can be seen that by operation of the chain and lever and the detentI6, the bracket is adjustable relative to the upright A thus stagingvthe scaiold walking boards 3 at any desired height, and the.l stepsadjustable to diierent positions relative to the bracket. 1

Having thus described and explained this invention what I claim is:

1. The combination with a vertical post having a plurality ofy spacedapertures along one face thereof, of a scaffold support mounted on saidpost for yvertical adjustment therealong, said scaffold supportcomprising a bracket supported on said post for vertical movement andinclud- K and i'lxedly secured to said vertical and horizontal to saidpost and having the other end secured leg of said bracket for movementabout a horil to said lever intermediate itsends, and a paWl zontalaxis, a chain extending about the other carried by said lever andengaging said ratchet face of said post and having one end secured trackfor holding said detent in a select one of to said post and having theother end secured to said apertures.' 5 said lever intermediate itsends, and a pawl cartion with respect to said one face of ssaidsposl',

2. The combination with avertioal post having ried by said lever and'engaging Said ratchet a plurality of spaced apertures along one facetrack for holding Sald detent in a, Select one 0f thereof, of a scaoldsupport mounted on said Said apertures; A

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post for; vertical -gdfjustmentfthereaiongsd fr scaoldsuppdrtompri'singa-"bracke't including 10 s a horizontal leg for supporting scaioldboards REFERENCES CITED a' vertical leg arranged m parallel spaced rela*The following references are of record in vthe and having the upper endiixedly securfei'tov one "Ymer'oftms patent: end of said horizontal leg,a U-shapedlr'xieber f I UNITED STATES PATENTS slidably embracing saidpostgandmavingitsilegs ixedly secured to said horizontal lg,"a`VVAi'te'it` Numer'z `II`ZNEme Date c i d. Y 1 f 551,434 DoolittleDec.17. 1895 arr ed a Jacent the oWer end of said ivertical 786,105 4.Ruy y Man 28. 1905 leg for selectively engaging the apertures in saidvthe iloW*erritenlif-Apivgtallyg connected nto .the vertical e 237-?

